In recent weeks, Raab has also received £10,000 each from Carpetright owner and Vote Leave donor Lord Harris and from Dominic Burke, chief executive of insurance firm Jardine Lloyd Thompson (JLT).
In March, Raab received £20,000 from Toby Ward, the head of JLT subsidiary Hayward Aviation, and £6,480 worth of communications advice from Melior Advisers.
All of the donations were declared in line with parliamentary regulations.
A source close to Raab told HuffPost UK the donations signalled Raab was a serious contender for the leadership.
“Dom is attracting some of the biggest Conservative donors, they feel we need real change. They also feel he is the only contender who could win across MPs, members and in the country.
“He’s the unity candidate. The smart money is on Raab.”
Raab’s donations were dwarfed by that of his rival Boris Johnson.
The former foreign secretary, also regarded as a future leader, has raked in more than £160,000 in donations